My question involves child support in the State of: NC

My child support order was first established in may 2001. A modification for increase was done in august 2008. I just found out in Feb 2009 that my ex misrepresented his income on both occurences.

-In 2001, he stated he made 38,000 per year working for his father's business. His actual income was reported as 64,000 that year.

-When we did the modification to increase child support in aug 2008 he reported his income as 106,000, actual income was 162,000.

In Dec. 2008, he filed for a child support modification to reduce child support because he said he lost his job. He lied in pretrial hearing and told the judge he could not find a job, he had no income and could not find a job. But in actuallity he left his employment making 162,000 per year to start his own business.

My question is this can I do anything about him lying about his income in 2001 when child support was set and can I do anything about him lying about income in 2008 for modification increase?

What is the best way to handle him currently trying to reduce child support saying he doesn't have a job when he has started his own business?

BTW, He hasn't paid child support at all in 3 months.....................desperately need help!!!! Any insight would be very much appreciated.